Skip to content

README.md

Latest commit

 

History

History
35 lines (24 loc) · 1.48 KB

README.md

File metadata and controls

35 lines (24 loc) · 1.48 KB

SPARQL Plugins

This module provides transformation plugins. It is based on Apache Jena and uses Titanium JSON-LD for JSON-LD framing.

For JSON-LD contexts used in framing, this plugin allows outbound URL connections passing by the ResourceProvider.

Transformation Types

  • sparql-construct

Content Negotiation

  • If TransformationInfo.mediaType is present, then and only then it determines the returned format.
  • If there's no content type on the transformation level and content negotiation by the request's Accept is used.
  • In case no content type is defined on the transformation level nor one is requested, the content tpye of input resource will be used
  • As a fallback, a default content type is used.

Transformation Parameters

Request parameters are passed to the query with a mechanism by Apache Jena. It replaces all occurrences of a SPARQL variable ?X with a literal.

Parameter types should be declared with the parameter descripter as xs:... types. xs:string is used as default.

Application Properties

  • url-connect-timeout: time limit for establishing a connection to a remote JSON-LD context URL for framing, defaults to 10s
  • url-read-timeout: time limit for fetching a remote JSON-LD context for framing, defaults to 10s
  • context-max-size: size limit of JSON-LD context for framing, defaults to 1MB